Skip to main content
eScholarship
Open Access Publications from the University of California

A newly calibrated laser-induced fluorescence (LIF) system for ar ions with a single tunable diode laser

  • Author(s): Woo, HJ
  • Chung, KS
  • Lho, T
  • Mcwilliams, R
  • et al.
Creative Commons Attribution 4.0 International Public License
Abstract

Accurate measurements of the ion velocity distribution function (IVDF), the ion temperature, and the ion drift velocity by laser-induced fluorescence (LIF) are only possible if the accurate laser wavelength during the wavelength scan is known, yet an absolute calibration is not easily achievable because of the non-linear characteristics of the piezo-electric actuator in a diode laser, the small mode-hop free tuning region, and uncertainty of the wavemeter. The LIF system for the Diversified Plasma Simulator (DiPS), which is a simulator for the divertor and space plasmas, is calibrated both by absolute calibration of the wavemeter and by launching diode lasers in opposite directions. In addition, the first result on the measurement of the ion temperature and the flow velocity is given.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View